Datasheet > G691L308T23

G691L308T23

更新时间： 2022-11-25 14:57:02

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致新 - GMT		微处理器
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12页	220K
描述
Microprocessor Reset IC

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G691L308T23 数据手册

Global Mixed-mode Technology Inc.

G690/G691

Microprocessor Reset IC

Features

General Description

ꢀPrecision Monitoring of +3V, +3.3V, and +5V

Power-Supply Voltages

The G690/G691 are microprocessor (µP) supervisory

circuits used to monitor the power supplies in µP and

digital systems. They provide excellent circuit reliability

and low cost by eliminating external components and

adjustments when used with +5V, +3.3V, +3.0V- pow-

ered circuits.

^ꢀFully Specified Over Temperature

^ꢀAvailable in Three Output Configurations

Push-Pull RESET Output (G690L)

Push-Pull RESET Output (G690H)

Open-Drain RESET Output (G691L)

^ꢀ140ms min Power-On Reset Pulse Width

^ꢀ10µA Supply Current

These circuits perform a single function: they assert a

reset signal whenever the V_CCsupply voltage declines

below a preset threshold, keeping it asserted for at

least 140ms after V_CChas risen above the reset

threshold. Reset thresholds suitable for operation with

a variety of supply voltages are available.

^ꢀGuaranteed Reset Valid to V_CC= +1V

^ꢀPower Supply Transient Immunity

^ꢀNo External Components

^ꢀ3-Pin SOT89, SOT23 and SC70 Packages

The G691L has an open-drain output stage, while the

G690 have push-pull outputs. The G691L’s open-drain

Applications

RESET output requires a pull-up resistor that can be

connected to a voltage higher than V_CC. The G690L

have an active-low RESET output, while the G690H

has an active-high RESET output. The reset com-

^ꢀComputers

^ꢀControllers

^ꢀIntelligent Instruments

^ꢀCritical µP and µC Power Monitoring

^ꢀPortable / Battery-Powered Equipment

^ꢀAutomotive

parator is designed to ignore fast transients on V_CC

and the outputs are guaranteed to be in the correct

logic state for V_CCdown to 1V.

Low supply current makes the G690/G691 ideal for

use in portable equipment. The G690/G691 are avail-

able in 3-pin SOT89 or SOT23 or SC70 packages.

Pin Configuration

Typical Application

V_CC

R_PULL-UP

G690/G691

µP

INPUT

RESET

(RESET)

GND

SOT 89

SOT23/SC70

*G691 ONLY

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.3

Oct 31, 2002

12 3 4 5 6 7...12

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